4 Inch Lift Kit
RR Spring · Chevy/GMC C10/K10 C15/K15 Truck/Half-Ton Suburban (69-72)
$699.95the kit
In stock at Rough Country · as of Sep 19
Tell us your truck and we'll check this kit against it.
Nothing is charged online. We confirm fitment and the final price on the call.
Before you buy
ONLY fits models with 52" rear leaf springs. If vehicle is equipped with a front sway-bar, drop brackets are recommended SKU: 1019 . Rear Spring Measurement: To confirm rear spring size a measurement will have to be pulled from eyelet to eyelet. For a visual, please click here .
Tires Rough Country fitted with this kit
Tested setups from the maker. Tap a tire size to shop it; a size we do not stock yet, we can quote on your call.
| Tire | Wheel | Bolt pattern | Offset | Note |
|---|---|---|---|---|
| 35x12.50R15 | 15x8 | 6x5.5 | -19 | |
| 35x12.50R15 | 15x8 | 6x5.5 | -18 | |
| 35x12.50R16 · not stocked yet | 16x8 | 6x5.5 | -12 | |
| 35x12.50R16 · not stocked yet | 16x8 | 6x5.5 | -6 | |
| 305/70R17 | 17x8.5 | 6x5.5 | -12 | |
| 285/75R17 | 17x8.5 | 6x5.5 | -12 | |
| 35x12.50R17 | 17x8.5 | 6x5.5 | +0 | |
| 315/70R17 | 17x8.5 | 6x5.5 | +0 | |
| 305/70R17 | 17x8.5 | 6x5.5 | +0 | |
| 35x12.50R17 | 17x8.5 | 6x5.5 | +1 | |
| 315/70R17 | 17x8.5 | 6x5.5 | +1 | |
| 305/70R17 | 17x8.5 | 6x5.5 | +1 | |
| 35x12.50R17 | 17x9 | 6x5.5 | -19 | |
| 315/70R17 | 17x9 | 6x5.5 | -19 | |
| 305/70R17 | 17x9 | 6x5.5 | -19 | |
| 285/75R17 | 17x9 | 6x5.5 | -19 | |
| 35x12.50R17 | 17x9 | 6x5.5 | -18 | |
| 315/70R17 | 17x9 | 6x5.5 | -18 | |
| 305/70R17 | 17x9 | 6x5.5 | -18 | |
| 285/75R17 | 17x9 | 6x5.5 | -18 | |
| 35x12.50R17 | 17x9 | 6x5.5 | -12 | |
| 315/70R17 | 17x9 | 6x5.5 | -12 | |
| 305/70R17 | 17x9 | 6x5.5 | -12 | |
| 35x12.50R17 | 17x9 | 6x5.5 | +0 | |
| 315/70R17 | 17x9 | 6x5.5 | +0 | |
| 305/70R17 | 17x9 | 6x5.5 | +0 | |
| 35x12.50R17 | 17x9 | 6x5.5 | +1 | |
| 315/70R17 | 17x9 | 6x5.5 | +1 | |
| 305/70R17 | 17x9 | 6x5.5 | +1 | |
| 35x12.50R18 | 18x8.5 | 6x5.5 | +0 | |
| 295/70R18 | 18x8.5 | 6x5.5 | +0 | |
| 285/75R18 | 18x8.5 | 6x5.5 | +0 | |
| 35x12.50R18 | 18x8.5 | 6x5.5 | +1 | |
| 295/70R18 | 18x8.5 | 6x5.5 | +1 | |
| 285/75R18 | 18x8.5 | 6x5.5 | +1 | |
| 35x12.50R18 | 18x9 | 6x5.5 | -12 | |
| 295/70R18 | 18x9 | 6x5.5 | -12 | |
| 285/75R18 | 18x9 | 6x5.5 | -12 | |
| 35x12.50R18 | 18x9 | 6x5.5 | +0 | |
| 295/70R18 | 18x9 | 6x5.5 | +0 | |
| 285/75R18 | 18x9 | 6x5.5 | +0 | |
| 35x12.50R18 | 18x9 | 6x5.5 | +1 | |
| 295/70R18 | 18x9 | 6x5.5 | +1 | |
| 285/75R18 | 18x9 | 6x5.5 | +1 | |
| 295/70R18 | 18x10 | 6x5.5 | -25 | |
| 295/70R18 | 18x10 | 6x5.5 | -19 | |
| 295/70R18 | 18x10 | 6x5.5 | -18 | |
| 35x12.50R20 | 20x9 | 6x5.5 | -12 | |
| 295/65R20 | 20x9 | 6x5.5 | -12 | |
| 295/60R20 | 20x9 | 6x5.5 | -12 | |
| 35x12.50R20 | 20x9 | 6x5.5 | +0 | |
| 295/65R20 | 20x9 | 6x5.5 | +0 | |
| 295/60R20 | 20x9 | 6x5.5 | +0 | |
| 35x12.50R20 | 20x9 | 6x5.5 | +1 | |
| 295/65R20 | 20x9 | 6x5.5 | +1 | |
| 295/60R20 | 20x9 | 6x5.5 | +1 | |
| 35x12.50R20 | 20x10 | 6x5.5 | -25 | Minor Trimming |
| 295/60R20 | 20x10 | 6x5.5 | -25 | Minor Trimming |
| 35x12.50R20 | 20x10 | 6x5.5 | -19 | Minor Trimming |
| 295/60R20 | 20x10 | 6x5.5 | -19 | Minor Trimming |
| 35x12.50R20 | 20x10 | 6x5.5 | -18 | Minor Trimming |
| 295/60R20 | 20x10 | 6x5.5 | -18 | Minor Trimming |
| 35x12.50R20 | 20x12 | 6x5.5 | -44 | Trimming Required |
| 35x12.50R22 | 22x10 | 6x5.5 | -25 | Minor Trimming |
| 285/55R22 | 22x10 | 6x5.5 | -25 | |
| 35x12.50R22 | 22x10 | 6x5.5 | -19 | Minor Trimming |
| 285/55R22 | 22x10 | 6x5.5 | -19 | |
| 35x12.50R22 | 22x10 | 6x5.5 | -18 | Minor Trimming |
| 285/55R22 | 22x10 | 6x5.5 | -18 | |
| 35x12.50R22 | 22x12 | 6x5.5 | -44 | Trimming Required |
About this kit
Transform Your Truck's Stance and Capability: Upgrade your GM truck from front to back with Rough Country's 4" Suspension Lift Kit. This premium lift delivers a leveled, aggressive look while enhancing ride height and off-road readiness all with an easy bolt-on installation.
Highlights
- Boosted Ground Clearance: Gain the extra height needed for better off-road capability and obstacle clearance.
- Application-Specific Front & Rear Leaf Springs: Engineered for a perfect fit and optimal ride quality.
- Clears 35-Inch Tires: Provides ample room to run up to a 35" tall tire with no rubbing.
- Premium N3 Series Shocks: Includes application-valved N3 shock absorbers for balanced on-road comfort and off-road control.
Read the full description
Engineered for Superior Ride Quality: This kit features application-specific front and rear lifted leaf springs, delivering increased ground clearance without compromising ride comfort or control. By eliminating rear lift blocks, the kit ensures consistent lift and improved suspension geometry, resulting in a smooth, factory-like ride. Brake line brackets are also included to maintain proper alignment and safety throughout the suspension travel.
Enhanced Performance with N3 Series Shocks: Rough Country's N3 series shocks come standard valved for your exact application and designed to provide a perfect balance of on-road smoothness and off-road capability. Featuring a 10-stage variable valving system, high-pressure nitrogen charge, and durable 54mm shock body with 18mm piston rod, these shocks are built for performance and longevity.
Room for Bigger Tires: Make room for aggressive wheel and tire combos. This 4" lift offers enough clearance to run up to a 35" tall tire with proper backspacing, giving your truck the rugged stance it deserves.
Limited Lifetime Warranty: Rough Country backs this kit with a Limited Lifetime Warranty, giving you long-term confidence on and off the road.
What's in the box
- 1 × Universal U-Bolt Kit Part #7609
- 2 × 4in Front Leaf Spring | Chevy/GMC C10/K10 C15/K15 Truck/Half-Ton Suburban (69-72) Part #8001
- 1 × FR Inst. Kit | GMC C15/K15 Pickup (69-72) GMC Half-Ton Suburban (69-72) Part #7564
- 2 × 2in Rear Leaf Spring | Chevy/GMC C10/K10 Truck & SUV/K5 Blazer 4WD (69-91) Part #8100
- 1 × N3 Shock Pair Part #23204
- 1 × N3 Shock Pair Part #23173
| Front | Lifted Leaf Springs Brake Line Relocation Brackets U-Bolts Hardware |
|---|---|
| Rear | Lifted Leaf Springs U-Bolts Hardware |
Specifications
| Brand | Rough Country |
|---|---|
| Part number | 18030 |
| UPC | 843030150624 |
| Lift | 4″ |
| Shipping weight | 227 lb |
| Country of origin | India |
| Shipping | Ground shipping only · Arrives in more than one box |
Trucks it fits
| Truck | Years | Drive | Trims |
|---|---|---|---|
| Chevrolet Blazer | 1969–1972 | 4WD | Base |
| Chevrolet K10 Pickup | 1969 | All | Base |
| Chevrolet K10 Suburban | 1969 | All | Base |
| Chevrolet K20 Pickup | 1969 | All | Base |
| GMC Jimmy | 1970–1972 | 4WD | Base |